html, body {
  height: 100%;
  margin: 0;
}

body {
  background: #14121f;
  display: grid;
  place-content: center;
  font-family: system-ui, sans-serif;
  touch-action: none; /* don't scroll while you play */
  overflow: hidden;
}

canvas#stage {
  display: block;
  background: #87ceeb;
  box-shadow: 0 0 30px rgba(0, 0, 0, 0.5);
  border-radius: 8px;
}